Types of valves ppt

What are the different types of hydraulic valves? What types of valves are used for throttling? It is a linear motion valve thatis used to start, regulate, and stop fluid flow.

It uses a rubber tube (pinchtube) to control the fluid. Advantages- They are ideally suited for the handling of slurries, liquids with large amounts of suspended solids,.

They are generally placed at a distance of about 1m to 2m and at all junctions. For long straight mains,. They range in complexity from a simple on-off valve to 4-way reversing valves used on heat pump systems.

These valves are used to control the flow of gases or liquids. Safety relief valve : used either for liquid or compressible fluid. Relief valve : Used in liquid systems.

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Gate valve is the most common type of valve in any process plant. In service, these valves are either in fully open or fully closed position. Saunders valves are ideal for restrictive or flow control duties (ie valve half closed to reduce flowrate). The three basic functions of valves are: 1. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Valve Types and Features.

They can handle slurries and dusty dry fluids. Ball valves are not used with abrasive and fibrous materials as it poses risk of damage to the seat and plug surface. In gate valves , the closing member is a metal gate.

A butterfly valve is a type of flow control device used to regulate the fluid flowing through a section of pipe. A flat circular plate is positioned in the center of the pipe. Prosthtic heart valve - PPT. A mechanical device implanted during prosthetic valve replacement surgery can be in various forms.

The gate slides down to close the valve. In fully open conditions, the flow area is equal to the area of the pipe and hence, there is negligible pressure drop across the valve.

Selection is primarily dependent on the service conditions, the task, and the load characteristics of the application. The most common types are ball valves , butterfly valves , globe valves , and gate valves. The principal types of check valves used are the tee-pattern lift check, the swing check, the tilting-disc check, the Wye-pattern lift check, and the ball check, illustrated in Figs. The schematic arrangements of these two actions are shown in Fig. Opposite is the case for valve B. Arztmann: Operation and maintenance of different valve types _ 4. The valve guar poppets, springs and wear shims are conventional.

Two-way solenoid valves, three-way solenoid valves , four-way solenoid valves , direct-mount solenoid valves and manifold valves. Three-way solenoid valves It has three pipe connections and two orifices. Diaphragm valves (commonly known as a Saunders, after a popular brand name) work on the principle of a rubber diaphragm or bladder opening and closing. Globe valve is a linear motion type of valves and is typically used in both on-off and throttling applications.

In globe valves , the flow of the fluid through valve follows an S-path. Due to this, the flow direction changes twice which in higher pressure drops. The chamber may be circular or rectangular in shape.

A poppet valve is lifted bodily. The latest on open heart cabg and valve surgery PPT Presentation Summary : dental clearance. ABOUT THIS CHANNEL INSTRUMENTATION AND CONTROL STUDENTS.